<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>let 命令</title>
<script>
  // 解构嵌套对象
  let person = { friends: ["Alice", {job:"CEO", age:19}] };
  let {friends: [name, {age, gender}]} = person;
  console.log(name); // Alice
  console.log(age); // 19
  console.log(gender); // undefined
  </script>
 </head>
 <body></body>
 </html>